CN101235640A - Fourfold pipe stratum decompression type double-liquor rotary spraying construction method - Google Patents
Fourfold pipe stratum decompression type double-liquor rotary spraying construction method Download PDFInfo
- Publication number
- CN101235640A CN101235640A CNA200810033980XA CN200810033980A CN101235640A CN 101235640 A CN101235640 A CN 101235640A CN A200810033980X A CNA200810033980X A CN A200810033980XA CN 200810033980 A CN200810033980 A CN 200810033980A CN 101235640 A CN101235640 A CN 101235640A
- Authority
- CN
- China
- Prior art keywords
- nozzle
- pressure
- mud
- pipe
- spray
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Abstract
The invention discloses a construction process of four-fold tube stratum decompression type double liquid jet grouting in the construction project technology field, which comprises the following steps that firstly forming a drilling lance boom with four-fold coaxial steel tubes, arranging passages in the inner portion of a multifunctional injector, which is relative to the four-fold tube of the drilling lance boom, installing two nozzles on the upper portion and the lower portion of the lateral side of the injector, secondly positioning, thirdly drilling holes, fourthly conducting jet grouting and injecting plaster, coaxially spraying compressed air and high-pressure cement plaster by the nozzles on the upper portion of the injector, and coaxially spraying high-pressure cement plaster and low-pressure accelerator serum by nozzles on the lower portion of the injector, wherein the low-pressure serum is externally coated on the high-pressure cement plaster, which are mixed with earth at the moment of being sprayed out in order to fast solidify soft ground, and fifthly conducting jet grouting to the design height, closing the valve for transporting fluid, and shifting a driller. The construction process solves the problems that the jet grouting solidification is hard to be conducted under the station of underground water flowing and jet grouting pile with large diameter and horizontal jet grouting solidification are hard to form. The invention reduces pressure for stratum through absorbing out waster mud water in the drilling and jet grouting process, and reduces the affect to the periphery.
Description
Technical field
What the present invention relates to is a kind of job practices of construction engineering technical field, specifically is a kind of job practices of Fourfold pipe stratum decompression type double-liquor rotary spraying.
Background technology
High-pressure rotary-spray construction technology is while cutting the soil body cement grout to be mixed with the shower nozzle ejection high-velocity fluid that rotates with the soil body of chopping, forms firm reinforcing earth pillar behind chemical reaction, and intensity can reach more than several MPas.This worker's method relates to doctor's invention by the Chinese and Western of Japanese NIT, is simple single pipe method (also claiming the CCP method), only jet cement slurries at first.Double pipe method, triple pipe method etc. have again been developed thereafter; The double pipe method is mixed mutually with the coaxial parcel high pressure cement of compressed air slurries cutting soil and both, makes to add the solid diameter and be greatly improved than single pipe method; The triple pipe method forms larger-diameter hack space with the coaxial parcel High-Pressure Water of compressed air cutting soil at first, injects cement paste with slush pump again and fills and mix, and makes to add the solid diameter and be greatly improved than preceding two kinds of methods.Thereafter, also successfully developed RJP worker's method of super-large diameter, diameter can reach more than 3 meters.RJP worker's method is carried out first time cutting with the coaxial parcel High-Pressure Water of compressed air to the soil body, forms larger-diameter hack space, does cutting for the second time with the coaxial parcel cement paste of compressed air again, and does to fill and mix, and makes to add the solid diameter unprecedented raising has been arranged.China is after succeeding in developing high-pressure rotary-spray construction technology the end of the seventies, and this worker's method progressively hydraulic engineering impervious wall, city underground engineering, stability of slope, harbour, bridge Ji Chu etc. has obtained using widely.Also progressively developed the jet grouting pile construction method of various diameters.
Through existing technical literature retrieval is found, the Amada Co., Ltd. affectionate base of a fruit (NIT) Chinese and Western relates to, in nineteen ninety-five application and obtained a series of about improving rotary churning pile diameter and the construction equipment of quality and the patent " ZL95116805.3; ZL95115548.2; ZL95115553.9; ZL95116907.6, ZL95116806.1 " of method.But the common feature that Chinese and Western relates to the major diameter jet grouting pile construction method of invention is with the current of super-pressure the soil body to be done cutting for the first time; Can produce following several aspects problem like this: 1) because the cement-soil mixture behind the rotary-spraying construction is in mobile mud state, it reaches first coalescence has certain intensity to need more than a few days; 2) when constructing in the flour sand layer of this method below groundwater table, produce sand liquefaction, phenomenons such as quicksand can make soil separate before knot is hard with cement admixture like this; Thereby generation quality problems; Rotary spray technique can not in being arranged, be used the soil layer of Groundwater Flow; 3) as being used for the construction level rotary churning pile, then the fluidised form composite soil can flow out, and makes to reinforce to lose efficacy; 4) big depth underground (＞25m) because strata pressure is bigger, and the stratum is hard, like this difficult cutting can take place, and is difficult to form the major diameter pile body.Chinese and Western relates to doctor and has invented the mud discharging device (ZL95115549.0) that is called MJS worker's method and draw a part of soil body with the negative pressure that jet produces for this reason.But MJS worker's method equipment needed thereby is more, and is rather miscellaneous, and inconvenience is constructed in narrow and small underground chamber, and makes construction cost higher.These problems affect the scope of application of rotary spray technique.
Summary of the invention
The present invention is directed to the deficiencies in the prior art and defective, a kind of job practices of Fourfold pipe stratum decompression type double-liquor rotary spraying is provided.The present invention makes the instantaneous curing of composite soil overcome the defective of above-mentioned rotary-spraying construction by spraying biliquid slurry (cement paste and accelerating admixture), and this technology can be constructed in the soil layer of Groundwater Flow is arranged; Reduce strata pressure by the way that adopts vacuum pump to force to inhale mud, enlarge the cutting radius in deep or when horizontal jet grouting, reduce the influence on stratum on every side, double-liquid rotary spray can be constructed at big degree of depth place, be difficult to carry out the problem that churning is solidified under the Groundwater Flow situation thereby solve, and the problem that is difficult to generate major diameter rotary churning pile and horizontal rotary jet strengthening body under the big depth conditions.
The present invention is achieved by the following technical solutions, the present invention includes following steps:
1. flatten the place, installation connects each equipment: vacuum pump, high-pressure pump, low-lift pump, air compressor are connected in by current divider bore on the spray boom, bore the support support connection of spray boom by rig, and by the driver control on rig rotation with do the advance and retreat motion, an end of multifunctional nozzle is connected with the brill spray boom by screw thread.
High-pressure pump is used to spray water under high pressure mud (or water).
Vacuum pump is used for the unnecessary useless muddy water of sucking-off.
Low-lift pump is used for the pumping accelerating admixture, and low-lift pump connects the accelerating admixture bucket, for low-lift pump provides accelerating admixture.
Among the present invention, the brill spray boom is used to hole and carries high pressure liquid stream to multifunctional nozzle and useless muddy water to be discharged by mud-suction hole to the vacuum pump of shower nozzle, the brill spray boom that can adopt the coaxial steel pipe of quadruple to constitute.
The coaxial brill spray boom of quadruple, interior pipe is connected in vacuum pump, and useless muddy water is discharged by the mud-suction hole that is positioned at shower nozzle top to quadruple pipe Guan Zaizhi vacuum pump; Second road is connected in high-pressure pump, and current and water under high pressure mud stream arrive multifunctional nozzle by this tube passage; The 3rd deferent is connected in low-lift pump, and accelerating admixture arrives multifunctional nozzle by this tube passage; Outer tube is connected in air compressor, and super-pressure compressed air arrives multifunctional nozzle by this tube passage.
Multifunctional nozzle externally is provided with an one way valve, two nozzles and a mud-suction hole among the present invention, and its inside is provided with passage and corresponds respectively to the quadruple pipeline that bores spray boom, and an end is connected with the brill spray boom by internal thread interface.Mud-suction hole is arranged at the side and is connected in first passage and communicates with the interior pipe that bores spray boom, and the mud-suction hole oral area establishes the steel wire guard in case the suction of stops stone.One way valve is located at the top of multifunctional nozzle and second passage of multifunctional nozzle; One way valve is used for jet water course when boring.Closed check valve is controlled automatically with fluid flow and pressure sensor.Two nozzles are located at the upper and lower, side of multifunctional nozzle, and upper nozzle is the coaxial nozzle structure of combined type, and inner nozzle is connected in second deferent, spray high pressure cement slurries, and outer side nozzle is connected in the 4th deferent, spray compressed air.Lower nozzle also is the coaxial configuration of combined type, and inner nozzle is connected in second deferent, ejection high pressure cement slurries, and outer side nozzle is connected in the 3rd deferent, the spray accelerating admixture.Mud-suction hole should be positioned at the top of nozzle from a distance.
2. locate: will bore spray boom and move on to the stake position, and determine to fix brill spray boom location with the driver of rig after verticality or the levelness;
3. boring: Yi Bian the back, location slowly rotates drill pipe, Yi Bian open conveying equipment for fluid substances and valve in the following order: being communicated with the current valve of high-pressure pump before this, is the dredging tube road valve that is communicated with vacuum pump then.Current inject by second deferent with high-pressure pump and hole by the one way valve jet water course cutting soil of being located at the shower nozzle top.(greater than 15m) opens vacuum pump and extracts the part cement paste out by mud-suction hole and interior pipe when the degree of depth is big.Slowly descend during boring and bore spray boom until design elevation.Water spray pressure is decided on the soft or hard character of soil layer, is generally positioned at 2～5MPa.Can increase water spray pressure when moment of torsion is big on boring spray boom makes the soil body lax in advance.
4. rotary jet grouting: when boring reaches predetermined projected depth, stop water spray; By pressure and flow control sensor, close the one way valve at shower nozzle top.The brill jet pipe is slowly rotated, Yi Bian open the FLUID TRANSPORTATION valve in the following order: at first open compressed air, open accelerating admixture then, the 3rd opens water under high pressure mud, is the valve that vacuumizes at last.Carry out the high-pressure rotary-spray construction by the construction parameter of setting.Coaxial injection compressed air of upper nozzle and water under high pressure mud, compressed air outsourcing cement paste increases the ability of cutting soil; Lower nozzle coaxial ejection water under high pressure mud and low pressure accelerating admixture (as water glass) slurries, low pressure slurries outsourcing water under high pressure mud carries out secondary cut to the soil body, and two kinds of slurries are mixed simultaneously with soil, reaches the purpose of quick curing soft foundation.When the degree of depth is big (greater than 15m), reach bigger scope for making to spray to cut, open the pressure that vacuum pump is extracted the part cement paste out by mud-suction hole and interior pipe and reduced the stratum.Used accelerating admixture material must be nontoxic and can not produces environmental problem, can be commercially available any accelerating admixture.
In the rotary jet grouting of the present invention, concrete construction parameter determines according to the consumption of situ strength, in-situ stress state and the curing compound of aimed dia and soil properties, the soil body, and promptly the pressure of the pressure of cement paste and flow, accelerating admixture and flow, compressed-air actuated pressure and flow, brill spray boom time pulls out speed and rotary speed.The relation of the construction parameter of jet fluid and rotary churning pile radius is calculated by following formula and is determined:
In the formula, L
m=cutting distance=pile radius (cm); K=soil nature coefficient; q
uThe unconfined compression strength of=soil layer; P
m=expulsion pressure; d
0=nozzle inside diameter; The N=cycle-index; V
Tr=D
mπ R
s/ 60 is the nozzle rate travel; R
s=the speed of rotation (rpm); A, b, c, n, m=regression constant.
The vacuum of vacuum pump is determined according to the amount of the useless muddy water of need sucking-off at all.
5. churning is closed the valve of carrying fluid respectively in the following order to the top absolute altitude that designs pile body: at first close accelerating admixture, close water under high pressure mud then, the 3rd closes compressed air, closes vaccum-pumping equipment at last; Close each pump and other equipment, finish the construction of a pile body.
6. rig displacement, 2.～5. repeating step carries out the construction of an other pile.
The present invention at the scene that will carry out rotary-spraying construction, determined the type and the intensity of soil layer with static sounding before construction.The prospecting borrow equipment, coring is determined cement and water glass consumption to be used for indoor compatibility test.Drilling depth is next rice of projected depth.According to the target strength requirement of reinforcing design, the formation and the character of the on-the-spot soil body, utilize the above-mentioned soil sample that obtains to carry out indoor Mix Ratio Test and determine cement consumption then.According to initial setting time requirement, accelerating admixture kind, utilize cement paste, accelerating admixture and soil sample to carry out the match ratio that indoor Mix Ratio Test is determined accelerating admixture.
The present invention's start idle running in advance behind the equipment installation in position confirms that each equipment is in good state.
The present invention utilizes two kinds of slurries (as water glass class accelerating admixture and cement paste) can tie firmly and produce the principle of intensity fast after mixing in the several seconds to tens of seconds, carry the cement paste of super-pressure to flow to the central passage ejection of the compound nozzle up and down of multifunctional nozzle with high-pressure pump, the soil body is made secondary cut mix; Carry accelerating admixture slurries to the soil body mud around producing with cement grout and cutting for the first time after the passage ejection of the bottom compound nozzle of multifunctional nozzle to mix with low-lift pump, thereby reach the purpose of quick curing soft foundation.
The present invention by make composite soil can the rapid solidification of number in wonderful (5～10 seconds) overcome have rotary-spraying construction now after composite soil be in the defective of fluid state; The realization rotary spray technique can be constructed in the soil layer of Groundwater Flow is arranged.Simultaneously, use the present invention to make speed of application improve 2～5 times, have stronger economic and practical; And nozzle while inject high pressure cement paste carries out secondary cut to the soil body up and down.Press by mud-suction hole sucking-off part mud with vacuum pump with reducing, make the diameter of rotary churning pile improve more than 2 times than traditional triple pipe.Job practices of the present invention is simple and reliable, and is economical and practical.The present invention is applicable to the rotary-spraying construction of any direction.
Description of drawings
Fig. 1 is the equipment pie graph of quadruple pipe double-liquid rotary spray among the present invention.
Fig. 2 is boring among the present invention, suction mud and churning block diagram.
The specific embodiment
Below in conjunction with accompanying drawing embodiments of the invention are elaborated: present embodiment is being to implement under the prerequisite with the technical solution of the present invention, provided detailed embodiment and concrete operating process, but protection scope of the present invention is not limited to following embodiment.
Embodiment is the construction that South Korea Seoul subway station pit substrate is reinforced, and the geological conditions of this job site is a diluvial formation, and the stratum of piling up successively is from top to bottom: first floor, the degree of depth 0～3m, be clay silt, water content is 26～48% not wait, and the N value is 5～10; The second layer degree of depth 3～7.0m is conglomeratic sand soil, and water content is 17～28%, and the N value is 10～30; The 3rd layer depth is 7.0～10.5m, silty clay, and water content 29～36%, N value are 5～10; The 4th layer is sand, and the degree of depth is from 10.5m～14.0m, and water content is 20～29%, and the N value is 15～25; Layer 5 is from 14 to 25m dark, clay silt, and water content is 21～50%, the N value is 15; Layer 6 is from-25 to 35m dark, powder fine sand soil, and water content is 25%, and the N value is 10～20, and this layer is an artesian aquifer, and head is-1.0m.
According to designing requirement, the excavation of foundation pit degree of depth is 25 meters.Be the method construction that anti-piping substrate adopts the full hall of double-liquid rotary spray stake to reinforce, the degree of depth is from-25.0m to-35.0m, and the scope of about 10.0m is constructed in fine sand layer.Require diameter to reach more than the 1.5m, more than the intensity 4.5MPa.The station is grown * the wide 250m * 20m of being: the rotary churning pile spacing is 1.3m, about 3100 piles of three rows of constructing altogether.Drill hole sampling to 40 is meter dark.Curing compound is the silicates accelerating admixture water glass of normal portland cement and non-environmental-pollution problem in the construction.
Mixing water/binder ratio when determining to reach target strength with institute's soil sampling and cement paste, water glass solution in test room is that 1: 1, cement consumption are C=760kg/m
3Cement grout adopts Portland cement to stir system, and slurry specific gravity is 1.57; Water glass consumption when the initial setting time is 20 seconds is 120l/m
3
Proportioning and aimed dia according to soil properties, the design reinforcement degree of depth, in-situ stress state, curing compound require to determine that each construction parameter is: the pressure 35～38MPa of cement paste, flow Q=160L/min; The expulsion pressure of accelerating admixture is 2～3MPa, and flow is 30 liters/minute; Compressed air pressure is 0.7MPa, tolerance 60～80m
3/ h; Time speed of pulling out of boring spray boom is 22.7cm/min (4.4 minutes/meter), and rotary speed is 6rpm, and promptly per minute 6 changes.
The construction sequence of rotary churning pile as shown in Figure 2, specifies as follows:
1. flatten the place, install each equipment that connects; Capital equipment as shown in Figure 1, by high-pressure pump, low-lift pump, vacuum pump, air compressor, current divider, quadruple pipe bit spray boom, compositions such as four-way multifunctional nozzle, water tank, slurry equipment and rig.High-pressure pump is used to spray high-pressure slurry (or water); Low-lift pump is used for the pumping accelerating admixture; Vacuum pump is used for the sucking-off waste mud liquid; Bore spray boom and be used for boring and carry high pressure liquid stream, constitute by the coaxial steel pipe of quadruple to shower nozzle.By current divider each pump is connected in the brill spray boom: vacuum pump is connected in middle pipe, and the mud that boring produces is extracted out by vacuum pump by this pipe; High-pressure pump is connected in second deferent, and High-Pressure Water and cement paste stream arrive shower nozzle by this tube passage; Low-lift pump is connected in the 3rd deferent, and accelerating admixture arrives shower nozzle by this tube passage; Air compressor is connected in the 4th deferent, and compressed air arrives shower nozzle by this tube passage.
High-pressure pump is used to spray water under high pressure mud (or water), and high-pressure pump is connected to by flexible pipe and mixes slurry station, mixes the slurry station and connects the cement warehouse, high-pressure pump, mixes the slurry station and is connected to water tank by the bifurcated valve, provides cement paste or water thereby be embodied as high-pressure pump.
Multifunctional nozzle externally is provided with an one way valve, two nozzles and a mud-suction hole, and its inside is provided with passage and corresponds respectively to the quadruple pipeline that bores spray boom.
Described two nozzles are disposed on the upper and lower of multifunctional nozzle side.Upper nozzle is the coaxial nozzle structure of combined type, and its inner nozzle is connected in second deferent, spray high pressure cement slurries, and its outer side nozzle is connected in the 4th deferent, spray compressed air.Lower nozzle also is the coaxial configuration of combined type, and its inner nozzle is connected in second deferent, ejection high pressure cement slurries, and its outer side nozzle is connected in the 3rd deferent, sprays accelerating admixture.
Described mud-suction hole should be positioned at the top of nozzle from a distance, and mud-suction hole and nozzle separate the above distance of 20cm.
2. start idle running in advance confirms that each equipment is in good state behind the equipment installation in position.
3. the location: will bore spray boom move on to the stake, determine to fix with the driver of rig after the verticality, as among Fig. 2 1. shown in;
4. boring: as among Fig. 2 2. shown in, Yi Bian location back slowly rotates drill pipe, Yi Bian open conveying equipment for fluid substances and valve in the following order: current (high-pressure pump)=＞sucking-off mud (vacuum pump).Current inject by second deferent with high-pressure pump and hole by the one way valve jet water course cutting soil of being located at the shower nozzle top.When big depth underground, open vacuum pump by mud-suction hole and middle pipe extraction part cement paste.Slowly descend during boring and bore spray boom until design elevation-35.5 meter.
5. rotary jet grouting: as among Fig. 2 3. shown in, when boring reaches predetermined projected depth, stop water spray; By pressure control sensor, close the one way valve at spray top.The brill jet pipe is slowly rotated, Yi Bian open the FLUID TRANSPORTATION valve in the following order: compressed air=＞accelerating admixture=＞water under high pressure mud.By the construction parameter of setting, as grouting pressure, mud flow rate, brill spray boom rotary speed, return the speed of pulling out etc. and carry out the limit and return and pull out rotary-spraying construction while changeing.Coaxial injection compressed air of upper nozzle and water under high pressure mud, compressed air outsourcing cement paste increases the ability of cutting soil; Lower nozzle coaxial ejection water under high pressure mud and low pressure accelerating admixture (as water glass) slurries, low pressure slurries outsourcing water under high pressure mud carries out secondary cut to the soil body, and two kinds of slurries are mixed simultaneously with soil, reaches the purpose of quick curing soft foundation.When big depth underground is constructed, reach bigger scope for making to spray to cut, open the pressure that vacuum pump is extracted the part cement paste out by mud-suction hole and middle pipe and reduced the stratum.
6. churning is closed the valve of carrying fluid respectively in the following order to-25.0 meters: accelerating admixture (low-lift pump)=＞cement paste (high-pressure pump)=＞compressed air (air compressor)=＞vacuumize by (vacuum pump); Close each pump and other equipment along above-mentioned order, finish the construction of a pile body, as among Fig. 2 4. shown in.
7. rig displacement, 3.～6. repeating step carries out the construction of an other pile.
Initial setting time with the pile body of double-liquid rotary spray construction is 20 seconds, and pile quality is good, the mixing of cement grout and bury.The scene is got the core result of the test and is shown that the pile body of maintenance after 28 days reaches 5.0～6.0MPa.
Claims (9)
1, a kind of job practices of Fourfold pipe stratum decompression type double-liquor rotary spraying is characterized in that, may further comprise the steps:
1. flatten the place, install each equipment: vacuum pump, high-pressure pump, low-lift pump, air compressor are connected in by current divider bore on the spray boom, bore spray boom and connect by the support support of rig, and by the rotation of the driver control on the rig with do the advance and retreat motion, multifunctional nozzle is connected with the brill spray boom;
Described brill spray boom adopts the coaxial steel pipe of quadruple to constitute, interior pipe is connected in vacuum pump, useless muddy water is discharged by the mud-suction hole that is positioned at shower nozzle top to quadruple pipe Guan Zaizhi vacuum pump, second deferent is connected in high-pressure pump, current and water under high pressure mud stream arrive multifunctional nozzle by this tube passage, and the 3rd deferent is connected in low-lift pump, and accelerating admixture arrives multifunctional nozzle by this tube passage, outer tube is connected in air compressor, and compressed air arrives multifunctional nozzle by this tube passage;
Described multifunctional nozzle externally is provided with an one way valve, two nozzles and a mud-suction hole, and its inside is provided with passage and corresponds respectively to brill spray boom quadruple pipeline, and two nozzles are installed in upper and lower, shower nozzle side;
2. locate: will bore spray boom and move on to the stake position, and determine to fix brill spray boom location with the rig driver after verticality or the levelness;
3. boring: Yi Bian the back, location slowly rotates drill pipe, open conveying equipment for fluid substances and valve on one side in the following order: the current valve that is communicated with earlier high-pressure pump, the dredging tube road valve that is communicated with vacuum pump then, current inject by second deferent with high-pressure pump and hole by the one way valve jet water course cutting soil of being located at the shower nozzle top, open vacuum pump and extract the part cement paste out by mud-suction hole and interior pipe when big depth underground, the brill spray boom that slowly descends during boring is until design elevation;
4. rotary jet grouting: when boring reaches predetermined projected depth, stop water spray, close the one way valve at shower nozzle top, make to bore when jet pipe slowly rotates and open the FLUID TRANSPORTATION valve in the following order: open compressed air earlier, after open accelerating admixture, open water under high pressure mud again, be the valve that vacuumizes at last, carry out the high-pressure rotary-spray construction then, coaxial injection compressed air of shower nozzle upper nozzle and water under high pressure mud, compressed air outsourcing cement paste increases the ability of cutting soil, shower nozzle lower nozzle coaxial ejection water under high pressure mud and low pressure accelerating admixture slurries, low pressure slurries outsourcing water under high pressure mud, the soil body is carried out secondary cut, and two kinds of slurries are mixed simultaneously with soil, realize solidifying fast soft foundation, open the pressure that vacuum pump is extracted the part cement paste out by mud-suction hole and interior pipe and reduced the stratum, reach big scope so that spray cutting;
5. churning is closed the valve of carrying fluid respectively: at first close accelerating admixture, close water under high pressure mud then in the following order to the top absolute altitude that designs pile body, close compressed air again, close vaccum-pumping equipment at last, close each pump and other equipment, finish the construction of a pile body;
6. rig displacement, 2.～5. repeating step carries out the construction of an other pile.
2, the job practices of Fourfold pipe stratum decompression type double-liquor rotary spraying according to claim 1, it is characterized in that, described upper nozzle is the coaxial nozzle structure of combined type, its inner nozzle is connected in and bores spray boom second deferent, spray high pressure cement slurries, outer side nozzle is connected in the 4th deferent, spray compressed air.
3, the job practices of Fourfold pipe stratum decompression type double-liquor rotary spraying according to claim 1, it is characterized in that, described lower nozzle is the coaxial configuration of combined type, its inner nozzle is connected in and bores spray boom second deferent, ejection high pressure cement slurries, outer side nozzle is connected in and bores spray boom the 3rd deferent, the spray accelerating admixture.
According to the job practices of claim 1 or 3 described Fourfold pipe stratum decompression type double-liquor rotary sprayings, it is characterized in that 4, described accelerating admixture adopts water glass class accelerating admixture.
5, the job practices of Fourfold pipe stratum decompression type double-liquor rotary spraying according to claim 1, it is characterized in that, described one way valve is located at the top of multifunctional nozzle and second passage of multifunctional nozzle, one way valve is used for jet water course when boring, and closed check valve is controlled automatically with fluid flow and pressure sensor.
6, the job practices of Fourfold pipe stratum decompression type double-liquor rotary spraying according to claim 1 is characterized in that, the steel wire guard is installed for described mud-suction hole oral area in case the suction of stops stone, and mud-suction hole is positioned at the top of nozzle and from a distance.
7, the job practices of Fourfold pipe stratum decompression type double-liquor rotary spraying according to claim 1 is characterized in that, described 3. in, the water spray pressure be arranged at 2MPa～5MPa.
8, the job practices of Fourfold pipe stratum decompression type double-liquor rotary spraying according to claim 1 is characterized in that, described 4. in, the relation of jet fluid construction parameter and rotary churning pile radius is determined by following formula:
In the formula, L
m=cutting distance=pile radius, K=soil nature coefficient, q
uThe unconfined compression strength of=soil layer, P
m=expulsion pressure, d
0=nozzle inside diameter, N=cycle-index, V
Tr=D
mπ R
s/ 60 is the nozzle rate travel, R
s=the speed of rotation, a, b, c, n, m=regression constant.
9, the job practices of Fourfold pipe stratum decompression type double-liquor rotary spraying according to claim 1 is characterized in that, is applicable to the rotary-spraying construction of any direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200810033980 CN100580188C (en) | 2008-02-28 | 2008-02-28 | Fourfold pipe stratum decompression type double-liquor rotary spraying construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200810033980 CN100580188C (en) | 2008-02-28 | 2008-02-28 | Fourfold pipe stratum decompression type double-liquor rotary spraying construction method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101235640A true CN101235640A (en) | 2008-08-06 |
| CN100580188C CN100580188C (en) | 2010-01-13 |
Family
ID=39919522
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200810033980 Expired - Fee Related CN100580188C (en) | 2008-02-28 | 2008-02-28 | Fourfold pipe stratum decompression type double-liquor rotary spraying construction method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100580188C (en) |
Cited By (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101886387A (en) * | 2010-07-06 | 2010-11-17 | 袁小忠 | Construction method of self-drilling type mixing jet-grouting pile for long-auger high-pressure and low-pressure multi-tube |
| CN103114580A (en) * | 2013-02-17 | 2013-05-22 | 广州市吉特高喷灌浆工程有限公司 | Construction method and device thereof capable of forming high-strength jet grouting pile in sludge layer |
| CN103221614A (en) * | 2010-11-30 | 2013-07-24 | 松本浩子 | Improvement body creating method |
| CN103883332A (en) * | 2014-02-28 | 2014-06-25 | 北京市市政工程研究院 | Method and device for reinforcing fine sand layers |
| CN104563099A (en) * | 2014-12-19 | 2015-04-29 | 开普天（上海）建筑设备贸易有限公司 | Porous pipe method large-diameter high-pressure jet grouting pile construction method |
| CN104612137A (en) * | 2014-12-19 | 2015-05-13 | 开普天（上海）建筑设备贸易有限公司 | Perforated pipe method super-deep, fast, and super-large diameter high pressure chemical churning pile construction method |
| CN104727312A (en) * | 2015-04-02 | 2015-06-24 | 无锡市安曼工程机械有限公司 | Quadruple high pressure rotary jet grouting technology |
| CN104863146A (en) * | 2015-06-04 | 2015-08-26 | 邓亚光 | Composite construction spraying and mixing method for high-strength quick-setting cement soil mass |
| CN106759299A (en) * | 2017-02-26 | 2017-05-31 | 北京中岩大地科技股份有限公司 | A kind of controllable churning technique in stake footpath |
| CN106948790A (en) * | 2017-04-13 | 2017-07-14 | 叶晓明 | Rig, shield machine churning breast wall apparatus and construction method |
| CN107620600A (en) * | 2017-07-27 | 2018-01-23 | 广州市市政工程设计研究总院 | A kind of MJS engineering methods and pipe-roof method combined supporting big cross section small interval tunneling engineering method |
| CN107842030A (en) * | 2017-12-07 | 2018-03-27 | 中铁二十局集团第六工程有限公司 | High-pressure rotary jet grouting pile equipment and construction method are used in a kind of material for diaphragm wall of Cofferdam construction |
| CN108487248A (en) * | 2018-05-30 | 2018-09-04 | 中石化石油工程技术服务有限公司 | Deep-well drawing out soil equipment and its construction method in a kind of snag |
| CN108978649A (en) * | 2018-08-07 | 2018-12-11 | 佛山市房建集团有限公司 | High pressure jet grouting foundation construction technique |
| CN110172969A (en) * | 2019-06-17 | 2019-08-27 | 中交第三公路工程局有限公司 | Quadruple pipe Construction of High Pressure Jet Grouting Pile method |
| CN110424890A (en) * | 2019-08-11 | 2019-11-08 | 叶江清 | A kind of percussion mechanism and multi-functional down-the-hole device |
| CN111172832A (en) * | 2020-01-07 | 2020-05-19 | 闫博 | Roadbed repairing equipment for road construction and construction method |
| CN111254923A (en) * | 2019-11-21 | 2020-06-09 | 浙江吉通地空建筑科技有限公司 | Micro-disturbance foundation reinforcing device and underground tunnel enclosure construction method |
| CN111894485A (en) * | 2020-07-25 | 2020-11-06 | 卢铖昀 | Deep silt layer combined drilled pile easy for discharging silt |
| CN112012216A (en) * | 2020-08-11 | 2020-12-01 | 上海市基础工程集团有限公司 | Double-liquid rotary spraying reinforcement method for improving bearing capacity of steel pipe pile |
| CN112176989A (en) * | 2020-09-26 | 2021-01-05 | 北京中岩大地科技股份有限公司 | Construction method for high-pressure rotary spraying based on slurry return data |
| CN113235581A (en) * | 2021-05-25 | 2021-08-10 | 广州捷盈工程有限公司 | Construction method of double-liquid rapid-hardening high-pressure jet grouting pile |
-
2008
- 2008-02-28 CN CN 200810033980 patent/CN100580188C/en not_active Expired - Fee Related
Cited By (25)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101886387A (en) * | 2010-07-06 | 2010-11-17 | 袁小忠 | Construction method of self-drilling type mixing jet-grouting pile for long-auger high-pressure and low-pressure multi-tube |
| CN103221614A (en) * | 2010-11-30 | 2013-07-24 | 松本浩子 | Improvement body creating method |
| CN103221614B (en) * | 2010-11-30 | 2014-10-15 | 松本浩子 | Improvement body creating method |
| CN103114580A (en) * | 2013-02-17 | 2013-05-22 | 广州市吉特高喷灌浆工程有限公司 | Construction method and device thereof capable of forming high-strength jet grouting pile in sludge layer |
| CN103883332A (en) * | 2014-02-28 | 2014-06-25 | 北京市市政工程研究院 | Method and device for reinforcing fine sand layers |
| CN103883332B (en) * | 2014-02-28 | 2016-08-17 | 北京市市政工程研究院 | Thin silt reinforcement means and device |
| CN104563099A (en) * | 2014-12-19 | 2015-04-29 | 开普天（上海）建筑设备贸易有限公司 | Porous pipe method large-diameter high-pressure jet grouting pile construction method |
| CN104612137A (en) * | 2014-12-19 | 2015-05-13 | 开普天（上海）建筑设备贸易有限公司 | Perforated pipe method super-deep, fast, and super-large diameter high pressure chemical churning pile construction method |
| CN104727312A (en) * | 2015-04-02 | 2015-06-24 | 无锡市安曼工程机械有限公司 | Quadruple high pressure rotary jet grouting technology |
| CN104863146A (en) * | 2015-06-04 | 2015-08-26 | 邓亚光 | Composite construction spraying and mixing method for high-strength quick-setting cement soil mass |
| CN106759299A (en) * | 2017-02-26 | 2017-05-31 | 北京中岩大地科技股份有限公司 | A kind of controllable churning technique in stake footpath |
| CN106948790A (en) * | 2017-04-13 | 2017-07-14 | 叶晓明 | Rig, shield machine churning breast wall apparatus and construction method |
| CN107620600A (en) * | 2017-07-27 | 2018-01-23 | 广州市市政工程设计研究总院 | A kind of MJS engineering methods and pipe-roof method combined supporting big cross section small interval tunneling engineering method |
| CN107842030A (en) * | 2017-12-07 | 2018-03-27 | 中铁二十局集团第六工程有限公司 | High-pressure rotary jet grouting pile equipment and construction method are used in a kind of material for diaphragm wall of Cofferdam construction |
| CN108487248A (en) * | 2018-05-30 | 2018-09-04 | 中石化石油工程技术服务有限公司 | Deep-well drawing out soil equipment and its construction method in a kind of snag |
| CN108978649A (en) * | 2018-08-07 | 2018-12-11 | 佛山市房建集团有限公司 | High pressure jet grouting foundation construction technique |
| CN110172969A (en) * | 2019-06-17 | 2019-08-27 | 中交第三公路工程局有限公司 | Quadruple pipe Construction of High Pressure Jet Grouting Pile method |
| CN110172969B (en) * | 2019-06-17 | 2021-02-09 | 中交第三公路工程局有限公司 | Construction method of quadruple pipe high-pressure jet grouting pile |
| CN110424890A (en) * | 2019-08-11 | 2019-11-08 | 叶江清 | A kind of percussion mechanism and multi-functional down-the-hole device |
| CN111254923A (en) * | 2019-11-21 | 2020-06-09 | 浙江吉通地空建筑科技有限公司 | Micro-disturbance foundation reinforcing device and underground tunnel enclosure construction method |
| CN111172832A (en) * | 2020-01-07 | 2020-05-19 | 闫博 | Roadbed repairing equipment for road construction and construction method |
| CN111894485A (en) * | 2020-07-25 | 2020-11-06 | 卢铖昀 | Deep silt layer combined drilled pile easy for discharging silt |
| CN112012216A (en) * | 2020-08-11 | 2020-12-01 | 上海市基础工程集团有限公司 | Double-liquid rotary spraying reinforcement method for improving bearing capacity of steel pipe pile |
| CN112176989A (en) * | 2020-09-26 | 2021-01-05 | 北京中岩大地科技股份有限公司 | Construction method for high-pressure rotary spraying based on slurry return data |
| CN113235581A (en) * | 2021-05-25 | 2021-08-10 | 广州捷盈工程有限公司 | Construction method of double-liquid rapid-hardening high-pressure jet grouting pile |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100580188C (en) | 2010-01-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100580188C (en) | Fourfold pipe stratum decompression type double-liquor rotary spraying construction method | |
| CN101245600B (en) | Construction method for generating horizontal reinforcing body by high-pressure-double-liquid rotary spray technique | |
| CN101962949B (en) | Long spiral double-pipe high-pressure stir-jet grouting pile construction method and device | |
| AU2020101047A4 (en) | Method for filling underground cavity in bedrock by grouting and hydraulic filling device | |
| CN102418344B (en) | Injector, drill bit combination structure and combination drilling tool | |
| CN101235636B (en) | Device for fast concreting soft soil ground foundation by high-pressure injecting double-liquor slurry | |
| CN101768957B (en) | Device for rapid solidification of soft soil foundation by high-pressure injection of double grout body | |
| CN101230573B (en) | Construction equipment for four-layer pipe ground layer depression type double-liquid horizontal jet grouting | |
| CN1193141C (en) | Combined grouting construction process of reinforcing foundation | |
| CN104929114A (en) | High pressure jet grouting pile waterproof curtain construction device and method | |
| CN108517877B (en) | Supporting construction method combining consolidation grouting of hybrid filling ultra-deep foundation pit with double-row steel pipe piles | |
| CN106759297A (en) | A kind of construction method of support pile and three pipe high-pressure rotary jet grouting pile deep basal pits | |
| CN101560764B (en) | Method for calking exploratory hole by intermittent high-pressure rotary jet grouting | |
| CN101245599B (en) | Construction equipment for generating horizontal jet grouting reinforcing body by injecting double-liquid liquid with high-pressure | |
| CN204753574U (en) | High pressure jet grouting pile stagnant water curtain construction equipment | |
| CN101570970A (en) | Construction method of cement soil anchor and anchor plate combined member thereof | |
| CN107338789B (en) | A kind of construction method of down-the-hole percussion triple-pipe high pressure jet grouting stake | |
| CN1986974A (en) | Pressure reducing horizontal reinforcing process for soft soil layer | |
| CN107740434A (en) | It is a kind of to be used for sandy gravel, the construction method of dolomite crushed zone dam foundation ditch water protecting curtain | |
| CN114808990A (en) | High-pressure pre-filling karst cave pile foundation construction method | |
| CN111501781A (en) | Supporting method and structure combining consolidation grouting of hybrid filling ultra-deep foundation pit with double rows of steel pipe piles | |
| CN114233385A (en) | Treatment method for mud burst and water burst of inclined shaft | |
| CN201649093U (en) | Long spiral dual-pipe high-pressure stirring-spraying pile construction device | |
| CN213233469U (en) | Triaxial down-the-hole impact high-pressure jet grouting equipment | |
| CN103195063B (en) | Fresh water splitting post grouting construction method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100113 Termination date: 20100228 |